Hi CL
There is some disagreement on the omission of relatives, but a relative can usually be omitted in a
restrictive relative clause (= no comma) in the following cases:
1. the relative is an
object:
He is the man [who/whom/that] I saw there.2. a
preposition is at the end of the relative clause:
He is the man [who/whom/that] I came with.3. the relative is modified by the verb
to be: He isn't yet the man [who/that] he will be.Some writers occasionally leave out the relative even when it is a
subject, but it may be a good idea to avoid this usage:
There is somebody at the door [who] wants to talk to you.Cheers
CB